LY-25 Magnetic Reed Switch SPST-NO

Part Overview

The LY-25 is a magnetic reed switch manufactured by Coto Technology, classified as a Magnetic Sensor with SPST-NO (Single-Pole Single-Throw Normally Open) output configuration. The device features wire leads termination and operates with a magnet actuator across an operating temperature range of -20°C to 85°C. The LY-25 is currently listed as Obsolete, making identification of compatible substitute components essential for ongoing maintenance, repair, and system continuity.

Substiute Parts

LY-25

Coto TechnologyIn Stock: 1004LY-25 Datasheet

Current PartRFQ

59025-010

Littelfuse Inc.In Stock: 227859025-010 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the LY-25 must maintain functional equivalence through matching the following critical parameters:

• Output Type: SPST-NO configuration is mandatory for direct substitution
• Actuator Material: Magnet actuation ensures compatibility with existing magnet-based trigger systems
• Termination Style: Wire leads provide mechanical and electrical interface consistency
• Category: Magnetic sensor classification defines the functional role

The primary substitute identified is the Littelfuse 59025-010, which matches all critical functional parameters. While the 59025-010 features a Probe package geometry compared to the Cylinder package of the LY-25, both devices employ identical reed switch technology with wire lead termination and magnet actuation, ensuring electrical and functional compatibility within applications utilizing wire-based interconnection.

Parameter Comparison

Engineering Selection Recommendations

The Littelfuse 59025-010 represents a direct functional substitute for the obsolete Coto Technology LY-25. Both components share identical electrical characteristics (SPST-NO output, magnet actuation) and regulatory compliance requirements (RoHS Compliant, REACH Unaffected). The 59025-010 provides the following selection advantages:

• Product Availability: Active product status ensures continued supply and manufacturing support
• Extended Operating Temperature: The 59025-010 operates across -40°C to 105°C, exceeding the LY-25 range of -20°C to 85°C, providing broader environmental capability
• Regulatory Compliance: Both components meet RoHS and REACH requirements; the 59025-010 meets ROHS3 specifications

Package geometry differences (Cylinder versus Probe) require mechanical validation during integration. Wire lead termination style is preserved, maintaining electrical compatibility. Actuation parameters (Must Operate and Must Release distances) differ between devices and should be evaluated against application-specific magnet positioning requirements.

Frequently Asked Questions (FAQ)

Q: Can the Littelfuse 59025-010 directly replace the Coto Technology LY-25?

A: The 59025-010 provides electrical and functional equivalence through matching SPST-NO output, magnet actuation, and wire lead termination. Package geometry differs (Probe versus Cylinder), requiring mechanical integration assessment. Both devices meet identical regulatory compliance standards.

Q: What are the key differences in operating temperature ranges?

A: The LY-25 operates from -20°C to 85°C, while the 59025-010 operates from -40°C to 105°C. The substitute provides wider environmental operating capability suitable for extended temperature applications.

Q: How do package differences affect substitution?

A: The LY-25 uses a Cylinder package while the 59025-010 employs a Probe package. Both maintain wire lead termination. Physical geometry differences require validation against mechanical space constraints and magnet actuation geometry in the target application.

Q: Are there compliance differences between these parts?

A: Both components are RoHS Compliant and REACH Unaffected. The 59025-010 specifically meets ROHS3 specifications, representing current regulatory standards. Both devices carry MSL Level 1 (Unlimited moisture sensitivity).

Q: What actuation parameters should be considered?

A: The LY-25 specifications do not provide Must Operate or Must Release distance values. The 59025-010 specifies Must Operate at 3.81mm and Must Release at 20.32mm. These parameters define magnet-to-switch proximity distances and should be evaluated against existing magnet positioning in the application.